I think Sanji gonna wear the raid suit twice. The 1st time will be when the Vinsmokes are in trouble, and Judge is defeated. Sanji was there helping and Judge wants him to wear the raid suit so that the Vinsmokes honor is preserved.
Then Reiju reveal that Judge actually loves Sanji. He's in conflict with himself. He is angry that Sanji is not the perfectly engineered son he planned, and yet, Sanji is Sora's fav son. When he locked Sanji up, he sent Reiju to take care of him. He arrange for a ship to come so that Sanji can leave n live the life he craves. He even get Reiju to help him with it.
So Sanji dons the raid suit and saves the day. In the final war, Sanji will use it again in 1 of his fight.